read these sites they provide helpful information :
http://animaldiversity.ummz.umich.edu/si...
http://dermatology.about.com/cs/hairanat...
http://www.aad.org/professionals/Residen...
Good luck
What is the function of the human hair?
It is a secondary sexual characteristic primarily; it also provides a little bit of warmth (especially bearded men) and protection from the sun (on the head)
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